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The 791-682039 Fuel Filter and Line, filters the fuel in the tank as it is forced into the carburetor up by means of the primer bulb.
To install.
Remove retainer ring from fuel line.
Insert fuel line thru gas cap opening.
Thread fuel line thru hole in bottom of the fuel tank.
Pull fuel line thru to firmly seat against inside tank wall.
Put retainer ring on fuel line,hold line and press ring firmly against the out side of the fuel tank wall.
Then attach fuel line to correct line on the carburetor.
The filter will at sometime get clogged with dirt and debris that has collected in the fuel tank, and will have to be replaced.
The primer hose is inserted into the fuel tank then connected to the Primer.
By pressing on the primmer a few times this assembly fills the carburetor with fuel.
When the carburetor has enough fuel in it, the excess fuel is forced back into the the tank through the fuel return line.
After time the primer hose will become brittle and crack and have to be replaced.
The primer will also lose its elasticity, and may also crack and not be able to suck up the fuel into the carburetor.
And will have to be replaced.
The purpose of the 791-181086 Fuel Return Tube is to return the excess fuel back into the fuel tank, after the primer bulb has been pressed and has primed the carburetor to start.
After time the Fuel Return Line will become brittle and crack and will need to be replaced.
This is an OEM replacement part,it is sold individually.
The Bumper Head Knob is the part of the trimmer that when struck on the ground, advances the trimmer line in the spool.
To remove the Bumper Head Knob, thread it off the spindle of the gear box assembly.
This is a genuine OEM replacement part, it is sold individually.
This is the front wheel on the models shown below.
There are two of them on each mower.
The wheel has a ring gear on the inside which is driven by the Right hand and Left hand smaller gear that attaches to the front axle on the transmission assembly.
